Malicious PDF — malware analysis report

Static analysis result for SHA-256 2614975690467d32…

MALICIOUS

PDF

34.2 KB Created: 2020-08-29 21:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25db3e418b81cc2cf02a9206cd01a75f SHA-1: 2ccf8a78ecb479b517ce64364d389a280086997b SHA-256: 2614975690467d320b78ed15a10d0514416d9835c6c751bd1bd0f1b732c965a9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=governing+texas+2nd+edition+pdf+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/wix?keyword=governing+texas+2nd+edition+pdf+free
    • https://cdn.shopify.com/s/files/1/0437/6923/3557/files/111_hits_tv_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/7475/4462/files/86937233958.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/ticketmaster_error_code_0002.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/shadowrun_seattle_sprawl.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/31515254141.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/lagewi.pdf
    • https://cdn.shopify.com/s/files/1/0461/2017/3732/files/77994455296.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/53061570663.pdf
    • https://static.usrfiles.com/ugd/b8c837_8bcff15cfa1c4370b1d950ab64693aab.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3b86c16dfe740c0a94601885d5d65a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4364686319d4179aea7819f94929b5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_12a2c83f2b20499789281d00ed5d31f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_95e37550f5e44b318819e444bdd307da.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd30a3165401484da617c59abe85d728.pdf
    • https://static.usrfiles.com/ugd/b8c837_04040f7608d74a0495fb67801fd37b0b.pdf
    • https://static.usrfiles.com/ugd/daca0d_abb2e0ab566d4625a9ddc26bc5afd982.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fd86df1d45b439bb0196b904063b124.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046f3.bin
ebc84e09323a9bc84a4b669fe6250765fc2dfba87a4d4db715263470c640488a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46F3 5468 bytes
font_01_sfnt_off000059b2.bin
c85dd8f2f83419e02fd01cd81efb78206f968b9048e874265ff239a6d722342a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B2 10056 bytes

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